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Continuously variable transmission using oscillating torque and one-way drives

a technology of oscillating torque and one-way drive, applied in the direction of clutches, non-mechanical actuated clutches, gearing, etc., can solve the problem of reducing the overall efficiency of the transmission

Inactive Publication Date: 2009-01-27
LESTER WILLIAM T
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]In accordance with one aspect of the present invention, the rotatable mass is a first rotatable mass and the eccentric offset is a first eccentric offset. A second rotatable mass is rotatably coupled to a second eccentric offset on the eccentric offset member. The first and second eccentric offsets being opposite of one another with respect to a rotational axis of the eccentric offset member. The input member is coupled to the second rotatable mass by a second linkage so that rotation of the input member causes the second rotatable mass to rotate.

Problems solved by technology

Because the engine must operate over a wide range of speeds, its overall efficiency is reduced.

Method used

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  • Continuously variable transmission using oscillating torque and one-way drives
  • Continuously variable transmission using oscillating torque and one-way drives
  • Continuously variable transmission using oscillating torque and one-way drives

Examples

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Embodiment Construction

[0025]In FIG. 1, there is shown a schematic diagram of a vehicle power system 11. The system has a prime mover 13, a transmission 15, and an output load 17.

[0026]The prime mover 13 is typically an internal combustion engine that can be powered by gasoline, diesel, natural gas, etc. Alternatively, the prime mover can be electric motors or some other source of power.

[0027]The transmission 15 is that of the present invention, shown in accordance with a preferred embodiment. The transmission 15 has an input that is connected to the prime mover 13 and an output that is connected to the load 17. The load 17 is shown as being a drive shaft 19 and vehicle wheels 21.

[0028]The transmission 15 is of a continuously variable type. Many internal combustion engines (and electric motors) operate more efficiently within a narrow range of engine speeds. A continuously variable transmission can be provided with a narrow range of input speeds and produce a wide range of output speeds for the load. Unli...

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PUM

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Abstract

A transmission utilizes oscillating torque to vary the mechanical power transmitted to a load. The transmission has a rotatable input member and a rotatable mass. The transmission also has a member with an eccentric offset, with the rotatable mass rotatably coupled to the offset and being eccentric with respect to the offset. The input member is coupled to the rotatable mass by a linkage so that the rotation of the input member causes the rotatable mass to rotate and apply centrifugal force to the member with the eccentric offset. First and second one-way clutches are coupled between the eccentric offset member and an output member. The first one-way clutch drives the output member in one direction and the eccentric offset member is driven in the one direction and the second one-way clutch prevents the output member from rotating in the other direction.

Description

FIELD OF THE INVENTION[0001]The present invention relates to transmissions of the type that are used to regulate the transmission of power from an engine or a prime mover to a load, such as are used in vehicles.BACKGROUND OF THE INVENTION[0002]Transmissions are used in a variety of applications to change the speed and torque provided by an engine or prime mover. One popular application of transmissions is in an automobile. In an automobile, the transmission is connected between the engine and the drive wheels or tires.[0003]Prior art automobiles utilize fixed ratio transmissions. These transmissions have a set of gears that provide a few fixed and discrete speed ratios between the input from the engine and the output to the tires. Engine rpm (revolutions per minute) varies over a wide range for each speed ratio. Because the engine must operate over a wide range of speeds, its overall efficiency is reduced.[0004]Continuously variable transmissions offer a way to boost engine efficien...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F16H29/08F16D27/10
CPCF16H29/02F16H33/08Y10T74/1513Y10T74/1524
Inventor LESTER, WILLIAM T.
Owner LESTER WILLIAM T
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